•Adopt hyperbolic primary mirror to realize F2.8 fast focal ratio. It delivers performance that's up to twice as fast as the F4 system.
• Carbon fiber was used to create its lens barrel material, which is beautiful, durable and lightweight, the total weight is less than 5kg.
• It also provides best thermal stability by using H-PZ33 optical glass (like Pyres glass).
• Equipped with high precision CNC mechanical parts, durable and firm.
• The use of a precision 2.5" R&P focuser (included 1:10 fine-tuning) offers larger payload and a stronger hold, so that your focuser will not slip when using heavy-duty observation accessories or camera.
• It features a triplet image corrector that helps to achieve 44mm full frame photography and meet the modern needs of observation and imaging.
• The “push-pull” collimation mechanism behind primary mirror is simple to use.
• A full set includes a pair of tube rings, a handle, a dovetail plate and an aluminum carrying case.
Aperture: 150mm
Focal length/ratio: 420mm/F2.8
Primary mirror type: Hyperboloid
Mirror material: H-PZ33 (similar as Pyrex glass)
Corrector type: Triplet air-spaced
Short axis diameter of secondary mirror: 70mm
Fully illuminated image circle: 44mm
Actual field: 6 degree
Main tube material: Carbon fiber
Main tube outer diameter: 195mm
Overall tube length: 445mm
Net weight: 4.45kg
Gross weight: 5.95kg (including tube cap, handle, tube rings and dovetail plate)
Resolution: 0.77 arc seconds
Focuser: 2.5”microdrive focusing
Visual limiting star magnitude: 12.7
Back focus: 55mm
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.
Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
